Multi-Messenger Astrophysics in the Dynamic Universe

On this long-term workshop Astrophysics has finally entered a new era, transitioning from the multi-wavelength observation approach of the 20th century to the era of multi-messenger observations. The discovery of the binary neutron star merger event GW170817 in 2017 marked the beginning of this shift, as it was first detected through a gravitational wave and gamma-ray burst, followed by electromagnetic counterparts observed across various wavelengths, including X-ray, optical, infrared, and radio. In addition to gravitational waves, significant advancements have also been made in other multi-messenger signals, such as high-energy neutrinos and high-energy gamma rays. Traditional X-ray, optical, infrared, and radio observations are not only achieving higher sensitivities but are also making great strides in discovery science through time-domain astronomy, focusing on transient events. The progress in multi-messenger astrophysics is unveiling the dynamic universe shaped by the evolution to black holes. Long-standing fundamental questions — such as the evolution of stars and galaxies, the mechanisms behind jet and particle acceleration, and the origin of elements — are seeing substantial advancements. At the same time, new mysteries are emerging as we deepen our understanding of the final fate of gravitational energy. These developments are also driving progress in cosmology and fundamental physics. In this long-term workshop, we invite leading researchers from around the world to engage in in-depth discussions on the following key topics in astrophysics. - Compact star mergers and gravitational waves - Gamma-ray bursts, supernovae and kilonovae - Supermassive black holes, tidal disruption events and QPEs - High-energy gamma-rays and neutrinos - Fast radio bursts and magnetars - Origin of binary black holes and neutron stars - Population III stars and galaxies - Related topics During the workshop, participants stay at YITP with desks and other facilities. They can engage in extensive discussions with fellow participants in the relaxed atmosphere of Kyoto.